"I am one who had been campaigning for an Indian model as an alternative to a federal solution," V Anandasangaree wrote in a letter to Modi.

Anandasangaree, 81, is the leader of the Tamil United Liberation Front (TULF) and a former Member of Parliament.

His opposition to the LTTE and its cause has forced him to remain outside the Tamil National Alliance (TNA), the main Tamil political party in Sri Lanka.

Referring to the TNA leaders' meeting with Modi in New Delhi, Anandasangaree in his letter describes the links between the LTTE and the TNA.

"Indian Prime Minister's advice would be important to find a solution to the Tamil problem but finding a solution was not the monopoly of TNA. Hence action must be taken to consult various political parties of Tamils and Tamil-speaking people," Anandasangaree wrote in the letter.

He has sought Modi's support to convene a meeting of all Tamil parties with the possibility of discussing the Indian model of 'devolution of power' as a solution to the three-decade-old ethnic conflict between Sri Lanka's Tamil minority and the Sinhalese Buddhist majority.